What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Trojan.Cryprar infection?

In this post you will certainly discover regarding the definition of Trojan.Cryprar and its negative impact on your computer. Such ransomware are a type of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a victim.

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Most of the cases, Trojan.Cryprar ransomware will advise its targets to launch funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has presented to the target’s gadget.

Trojan.Cryprar Summary

These modifications can be as follows:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution;
  • Guard pages use detected – possible anti-debugging.;
  • Dynamic (imported) function loading detected;
  • Reads data out of its own binary image;
  • A process created a hidden window;
  • Executed a very long command line or script command which may be indicative of chained commands or obfuscation;
  • Drops a binary and executes it;
  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Created a process from a suspicious location;
  • A script process created a new process;
  • Network activity detected but not expressed in API logs;
  • Detects Bochs through the presence of a registry key;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Attempted to write directly to a physical drive;
  • Appears to use command line obfuscation;
  • Creates a copy of itself;
  • Collects information to fingerprint the system;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the target’s hard disk — so the target can no more make use of the data;
  • Preventing routine accessibility to the target’s workstation;

Related domains:


One of the most common channels where Trojan.Cryprar Ransomware are infused are:

  • By methods of phishing emails;
  • As a repercussion of customer ending up on a resource that hosts a destructive software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s PC or protect against the device from functioning in an appropriate fashion – while likewise positioning a ransom note that states the demand for the sufferers to effect the repayment for the purpose of decrypting the documents or restoring the documents system back to the initial condition. In a lot of instances, the ransom money note will certainly show up when the client reboots the PC after the system has currently been damaged.

Trojan.Cryprar distribution channels.

In various corners of the world, Trojan.Cryprar grows by leaps as well as bounds. However, the ransom notes as well as techniques of obtaining the ransom amount might differ depending on certain neighborhood (regional) settings. The ransom notes as well as methods of extorting the ransom money amount may differ depending on particular neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having found some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that requires the individual to pay the ransom money.

    Faulty declarations about unlawful material.

    In countries where software application piracy is much less preferred, this technique is not as efficient for the cyber frauds. Alternatively, the Trojan.Cryprar popup alert may falsely claim to be originating from a law enforcement establishment as well as will report having located child pornography or various other illegal information on the tool.

    Trojan.Cryprar popup alert might wrongly claim to be deriving from a law enforcement establishment and also will certainly report having located child pornography or other illegal data on the gadget. The alert will similarly contain a requirement for the user to pay the ransom money.

Technical details

File Info:

name: 17BCF36DA84523EB5291.mlw
path: /opt/CAPEv2/storage/binaries/b34480bdcea6dd89e8b7b1b4fb7d1f8e0650fbe809ebfca74d6787a9f108f05a
crc32: BDA47CDF
md5: 17bcf36da84523eb5291749cc1b59a21
sha1: 062188c3b3bf4afcc164d0a60c3871bd0130919e
sha256: b34480bdcea6dd89e8b7b1b4fb7d1f8e0650fbe809ebfca74d6787a9f108f05a
sha512: 438f4ebe81dead03ef1b8da866011db8e6f2b979b93b6eece4a61905ff3327482b1b7d43bd21e2ce42e1238e1ea60aad0226daa1fde47c2d1e4b0ebb5c1317f0
ssdeep: 49152:N+meHXA4sN2bwdH3PwxucDhOuXHxoLZ/Bql7hCcfPIWsMLaqKV:0O4NUdX2DrXHq67hjfPZ7dKV
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T128B52312A6C181B3E1335934AEFED322A93EFC648E34CD0F53986B1D4A705D1B616B76
sha3_384: bd2d55fb0b285a0d0e651fb80485be6e4f455ad2a86605cff2b76676be90025d0151d44957bf0e31735f8e23fe1cfbc4
ep_bytes: e8d1040000e98efeffff3b0db8f04200
timestamp: 2019-04-27 20:03:33

Version Info:

0: [No Data]

Trojan.Cryprar also known as:

K7AntiVirusTrojan ( 0057c86f1 )
K7GWTrojan ( 0057c86f1 )
ZonerProbably Heur.RARAutorun
EmsisoftTrojan.GenericKD.47474002 (B)
MAXmalware (ai score=88)
CynetMalicious (score: 100)
RisingMalware.AbnormalScript/SFX!1.D9B9 (CLASSIC)
SentinelOneStatic AI – Suspicious PE

How to remove Trojan.Cryprar virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan.Cryprar files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan.Cryprar you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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